在滑梁险槽的河心石梁尾部常有旺盛的()下延,上行船可利用,以提高航速。
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Required lifesaving equipment on existing vessels may becontinued in use on the vessel if().
A. kept on board no more than 2 years
B. inspected and serviced every 6 months
C. destroyed if more than 5 years old
D. maintained in good and serviceable conditio
试衣间长、宽、高不宜小于()
A. 900mmx900mmx1800mm
B. 900mmx1000mmx1800mm
C. 1000mmx900mmx1800mm
D. 1000mmx1000mmx1800mm
外国公司在亚洲发行债券称()。
A. 欧洲债券
B. 扬基债券
C. 武士债券
D. 龙债券